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[awr-i-kuh l] /ˈɔr ɪ kəl/
  1. the projecting outer portion of the ear; pinna.
  2. Also called auricular appendage. an ear-shaped appendage projecting from each atrium of the heart.
  3. (loosely) the atrium.
Botany, Zoology. a part like or likened to an ear.
Origin of auricle
First recorded in 1645-55, auricle is from the Latin word auricula the (external) ear, ear lobe. See auri-2, -cle1
Related forms
auricled, adjective
Can be confused
auricle, oracle. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for auricle


  1. the upper chamber of the heart; atrium
  2. a small sac in the atrium of the heart
(anatomy) Also called pinna. the external part of the ear
(biology) Also called auricula. an ear-shaped part or appendage, such as that occurring at the join of the leaf blade and the leaf sheath in some grasses
Derived Forms
auricled, adjective
Word Origin
C17: from Latin auricula the external ear, from auris ear
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for auricle

part of the ear, 1650s, from Latin auricula "ear," diminutive of auris (see ear (n.1)). As a chamber of the heart, early 15c., from Latin, so called from a perceived similarity in shape to an animal's ear.

Online Etymology Dictionary, © 2010 Douglas Harper
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auricle in Medicine

auricle au·ri·cle (ôr'ĭ-kəl)

  1. Atrial auricle.

  2. The projecting shell-like structure on the side of the head constituting, with the external acoustic meatus, the external ear. Also called pinna.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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auricle in Science
  1. The visible part of the outer ear.

  2. An atrium of the heart.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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